Russian Orthodoxy is a traditional religious faith with far-reaching influence in Russia

Russian Orthodoxy is the religious system formed by the development of Eastern Orthodoxy, one of the three major branches of Christianity, within the territory of Russia, and together with Catholicism and Protestantism it ranks among the major traditions of Christianity. It was introduced from Byzantium into the region of ancient Rus in the late tenth century AD, and thereafter gradually became the spiritual pillar of Russian society, deeply integrated into the nation's history and culture.

In terms of faith and liturgy, Russian Orthodoxy has preserved many ancient traditions, emphasizing icons, sacraments and fasting; the worship services are solemn and elaborate, mostly chanted by choirs with little use of instrumental accompaniment. Church architecture, marked by onion-shaped domes and golden decoration, is one of the most recognizable sights in Russian cities and villages.

In terms of church organization, the Russian Orthodox Church is centered on the Moscow Patriarchate, with numerous dioceses, monasteries and theological seminaries under its jurisdiction, making it one of the largest Orthodox churches in the world. Historically it has gone through different stages of prosperity, restriction and revival, and today it still holds an important place in Russian social life.

For ordinary readers, understanding Russian Orthodoxy is also a key to understanding Russian culture. From the religious sentiments in literary classics, to festive customs such as Easter and Christmas, and further to icon painting, bells and church music, this faith permeates Russian art, folk customs and daily life, and is of considerable value for observation and study.